stringer shaped yes, but material I’m not sure, I wouldn’t do a regular stringer out of balsa… well, to be honest I didn’t put a stringer in a board in a long time and yes, as long as it’s not too thick the balsa will bend easily. I just had some clamps to hold them while the bottom was curing.
The handle is home made too, L shaped piece of XPS with the right corners rounded and glassed under vacuum with 4 layers of 6oz. at the same time I prepared a plate of 4x6oz. then the L shaped gets cut to length placed face to face, the plate cut to close 3 sides, and everything glued with epoxy silica microsphere…
for the board I need to make more picture, but here’s an idea:
vacuuming of the glass patches on the bottom:
bag is some PVC table cloth folder and glued on 2 side, the pump is the cheap clothe vacuum storage thing… reusable, cheap and no risk to pull too much vacuum.
you can get an idea of the rocker (very “soft”), rails are vertical on top half and almost vertical on bottom half, with quite sharp edges on the bottom to release water. the goal on this board was really to maximize the bottom surface and let water flow as freely as possible to get as much speed as possible (in a 5ft board) in light wind.
below is what the handle and boxes look like after re-opening them. it’s much cleaner to just glass over everything and open with a router at the end… as long as you can find the boxes
and that’s what the top look like with leftover pads… I need to make a new full deck one now that I received a full sheet …